Express in Terms of I $\sqrt{-400}$ A) $\mathrm{i} \sqrt{20}$ B) $20 \mathrm{i}$ C) $\pm 20$

Multiple Choice

Express in terms of i.
- $\sqrt{-400}$

A) $\mathrm{i} \sqrt{20}$
B) $20 \mathrm{i}$
C) $\pm 20$
D) $-20 \mathrm{i}$